Tractor



1931. w. K. LIGGETT TRACTOR I Filed April 26, 1924 July-21 4 Sheets-Sheet 1 July 21, 1931. w. K. LIGGETI TRACTOR Filed April 26, 1924 4 Sheets-Sheet 2 21, 1 931. I i w; -rf 1,815,674

' TRACTOR Filed April 26, 1924' 4 Shets-Sheet s Jul 21,1931.

W. K. LIGGETT TRACTOR Filed April 26, 1924 4 Sheets-Sheet 4 'Patnted I 11.1mm; or C L MBU OHIO; ese enqe ne JEFFREY Menus-Q i C M Y, 0F COLUMBUS, 0519;, we qoer e 'el w 0E exile Application med g mz'e,

ih ehtion haste (do with impre e= e .3 in; t ee-t te, end more. pa ticularly tQ there is provided a plurality .of uendless Y prqvide an improved hive mechan sm fer actuating the ehdleseje eins, and, further, a

' centre-l; mechanism by means of 1 which I th maehine mayhesteered nd urn d by peepenmeniputetien Qfi such: contro me hanism,

' Th,e. meanslwhereby I attain'th ee Objec s areef ully set for-eh thefiollewing peeifi ew ti an, and illustlfa e liin th "dmwingsfln -whichi+fl v :Fig'il ism side, ievation efv hle pr f red embodimenb'of' my iI 'Q E L' 1 :4; l-

Fig: 2 isen end eleveti c i-the machine accompanying i llustlateldin' F g-Bis a side eleszetiene he pewemeek;

ofthe machine V e .t

Fig.4 is, an end lelevatiqn qfthe pow-en tigevieeslof the machine; tether rpfi te; being emittedfio simplify ,thezfigmrey; 3 1

Figfie'is e e mewhet degmmma ieehew ing o'zfithe primalfyxfdri vingyge which or slfi npntainedr power transmissioxl clevicgg 1 95s a side elevation L OfYthG 'QVGI'SlIlg gear; leaking mm-the lefiitgkFignii tid ii' wherein the numeral 1 mefrstto the Pei-see m w hieh like numerals hhfies'hotvh' an embedi en'e. of my inveilb main frer n upon which the Q'pera tivle parts Off {the maehi ne are momited. IAttaehed T10 from sui ehl pewe r me hen sm ie mevethe 1924; :Serial 1%; 7094255.

the-longitudinal sills, :2. hefieme l e pememeekyer sekfr-eentamed pewer teem mle ongmeeheniem, by whiehpeweris emit ed item th m ter fiteipnepel. the 11.31?

eh-ine in e m nnee whi hwill be hereieeftee ei eet :ie The motel is die;

endmeyib 0f any: emwenient typ eui ehle {a I the eehditieae under which the meehine pe? ates, The m ter 1s pre eeehl y supperted dfllegfly upon h imme efzt emef jhilie',

indep ndent ef thepewe jeek, end is. me]

widedwithe pmrpini ni whieh meshes ith meetengeee 5 the powe rj 4 Y pewer deck: e mpueee two p t-el el "inemee ewe Z whi h; are held in spaced relatwnihy uitable ereesxeels, end,-es ehewn mjElg; reet upe end ere ie the gi al lleg ef themem heme." l

the side flames 6, and 7 a e farmed euite 39 .1 2.11.211.- leee ings for he s pper of th sev: era ehefte meleded m 'the new r eien neeehenz ehe.a e t e, 'lfhe. mee n gee? 5 i'ek yed to theshe tlQ -le extends e rese he jack fr me endi-p tegeets et'be h.s desther qf- On one p eieet ling end (li he haf 10 is mounted a epne ke Wheel 11 adap ed to be tconneeted through a Suitable endle s chain with eny suita-bly'pw sitiQnecl-d viee which. i may he. desired to :eeeu te item the me r 3-, he preeket Wheel 11 may be ope etively eenneet lte th by means of multiple is fr etien I :eluteh (seei iig -t 5) hav ng at 6.01;-

trolling lever 18 convenient to the, hand f I (the operator; by manipulation of which power. may-heepp ed to the sp o ke Wheelill fer ile pu p se abo e de cri e Ans e utehes 9f thisvt'ype ere we lu de e eod i he ant, at: isitheught that, the cl t h l2 he d LL01; be .e furth r des r bed at: this, time.

90 e e v Eermedenithe u o th mas gea e t is'the driving element 1 o e mul ipl ie -frie i nclu ehhwing a p ali y of'fnieti n 1. e nged eo neet said driving member w h he. r ve membe 6v when eeiddisee are p e sed ogeth r The: (lii en 7 member 161s secured to a sleeve 17 WhiCh is j uitheled upon h sha d e je linel beefing l,1 ee ri,e y an arm 18' ,melmted" I .on. the tie rod 8, so as to be upheld by the jack frame, engages the periphery of said sleeve for the limitation of its endwise move- .ment. Keyed tothe shaft 10 at. or near'its opposite end is a spur pinion 19 which en gages aback gear'20 freely rotatable'upon the tie rod 8. To the hub of this back gear 20 is fixed a'pinion 21 which engagesa gear 22 rotatably mountedon the shaft 10. The

.hub 23of the gear 22 constitutesonemember of a multiple disc friction clutch which is connectable by a'plurality of friction discs 24 with the companion clutch member 25 fixed to the sleeve 17 Formed-in-the side tending upwardly therefrom, and from the 7 upper end of this projection;26 tierods 27 '1 extend downwa-rdlyto thebearing 18 and the arm 18, so as to tie'the frame parts together and give rigidity to the frame and bearings. The shaft 10 is supported in the sleeve- 27, and thrust'collars 28 and 29 attached to the said shaft prevent relative" longitudinal movement of said shaft and sleeve. I 'Ahand lever 30, attached to the sleeve 27 affords means for its rotation in'the'bearings 26,a nd r by said rotation, saidsl'eeve27', together withv the shaft 10, may bemoved longitudinally relative to the jack frame.

When the lever 30 is rotated in one direction, the shaft lO' will'be moved towards the right hand side of the machine, caus ng the flange 31 of the clutch member 23m press the discs 24 together, and thereby "operatively connectthe heaven with the shaft 10 'to' drive said sleeve 17 through the back gears 19,20,21and 22, at arelatively low speed.

When the lever 30 is rotated in the opposite "direction,the shaft 10 will be longitudinally moved towards the left hand side (Fig. 5) of the machine to exert pressure upon the discs 15', and thereby connect the sleeve 17 directly with the gear 5 to cause revolution of said sleeve at the relativelyhigh speed of the master gear.

which engages'with a spur pinion 33 jour naled upon a stationary shaft -34 carried by the jack frame. The pinion 33 meshes with the spur gear 35 which is freely mounted on the shaft 36, and it also meshes with a pinion 37 formed integral with the sleeve 38 which "is journaled upon'the stationary shaft39.

Formed on the sleeve 38 is asecond spur pinion 40 which meshes with a gear 41, similarto the gem- 35, and also freely mounted upon the shaft 36. A double faced jaw clutch .42 positioned between the gears 3 5 and 41,

sides of, the gears 35 and 41, to connect either .of said gears to the sleeve'43. A shifting lever 44 is arranged to control the clutch 42, and is provided with a handle 45' projecting through the sides of the housing 46 of the machine-in position convenient. to the hand of the operator, wh0, by manipulation of said handle and clutch, may throw either of gears 35 and 41 into action and cause the rotation of said sleeve 43 in either directionoas preferred. f 7

. Fixed to the sleeve43 is a pinion 47 which meshes with ring gear '48 of a differential I driving gear. .of the well known bevel gear planetary type. This differential gear is provided witha plurality of bevel pinions 49, each of which engages both of the bevel gears 50 and 51 in the manner which is wellunderstood in theart.

. Oneof the'bevel gears 50 is 'keyedto the shaft 52 which .is suitably journaled in bearings in the main frame of the machine. The other bevel gear 51' is fixed to the sleeve 53 mountedv concentrically with the shaft 52, and extending through the bearing 54 of the main frame. 1 Fixed to the projecting ends of the shaft 52 and sleeve 53 are the'hubs 55 and 56, to which are fixed'the sprocket wheels 57 and58. The sprocket wheels 57 and 58 are connected through the endless chains'5'9 and 60 with the sprocket wheels 61 and 62, fixed to the main'tra'ction sprocket wheels 63 and '64. The traction sprocket wheels 63 and .64 are freely journaled upon the axles 65 which are rigidly secured to the frameof the machine, and tractor chains 66 and 67- engage the said traction sprocket wheels and are actuated thereby 'to p'rop el the machine. The traction chains 66and 67 are of the usual and well known type having treads 68 suitable to engagethe ground and to support thev weight' of the machine thereon. These tractorchains 66 and 67 pass around suitable sprocket wheels, guide rollers, and'the 1ike, to' support the machine in the -manner which is well. understood "in the art.- Sincethe details of these devices form no part in the present invention, and are well understood in=the-art, further descripp tion is not thought to be required at this time. Formed on the sleeve 17 1s a'spur plnion 32 These brake bands 71' and 72 are'connected through suitable toggle levers 73 and7 4 with the brake lever 75 in such manner. that when said brake lever is moved in one direction, oneof these bands will be tightened upon its drum and the other released, and when-said lever is moved in the opposite direction, the first mentioned band will be loosened and the other tightened." By the manipulation of the lever 7 5the operator may optionally tighten either of the brake bands v71 or '72 to thereby retard or preventthe rotation of the respec tive brakedrums. 7 Through the action of the I v differential driving gear, When one of the brake drums is held fagainstrot'ation, the

otherwill be caused to revolve at a proporti'onally higher speed, and the rotary motion transmitted through the driving chains 59 and 60 will cause corresponding differential movementof the tractor chains'66 and 67 to I turn the machine in the desired direction. By the mechanism above described, my 1111- proved tractor maybe propelled either for- Wardly or rearwardly at, a relatively high speed, or at a relatively low speed, and it I may be turned in any preferred direction at the Will of the operator.

'A platform 76 mounted upon the main frame 1 atone side ofthe machine forms a convenient perch upon which the operator may ride, and all "of the controllinglevers project through the housing 45'of the machine 'at'points convenient to'the hand of the operator When riding upon said platform.

It is obvious that'changes in construction may be made and 'mechanical I expedients other than and equivalent; of those here shown may be adopted,'and Ido not, therefore, limitmyself to the detailed disclosures,

except in so far as I am limited by the appended claims. a "f I claim Ina machine of secured to said drive" element ateach' side thereof, means for preventing displacement I of said drive element and said driven members longitudinally of said shaft, respective driving members of the clutches'disposed on i saidshaft in proximity to the driven mem v bers, connections for driving said driving members fromsai-d shaft in the same direction, each at a different speed, and means for simultaneously displacing the driving members relative to the driven members of the clutches to selectively engage the clutches. In testimony whereof I have hereunto set my hand.

v WILLIAMK. LIGGETT;

the class described, a motor, an axially displaceable shaft driven, by themotor, a drive element loosely mounted onsa'id shaft, a driven member of "a clutch 

